Sharp MMD24B, MMD24S DESCRIPTION OF LSI IC-1, Pin No, Description, Power source voltage 0V GND

MMD24S

MMD24B

			DESCRIPTION OF LSI (IC-1)
The I/O signal of the LSIis detailed in the following table.
Pin No.	Signal	I/O	Description
1 - 3	AN5- AN3	IN	Terminal to change cooking input according to the Model.
			By using A/D converter contained in the LSI, DC voltage in accordance with the Model
			in operation is applied to set up its cooking constant.
4	AN2	IN	Input signal which inform the drawer door is in the middle position between the opened
			position and the closed position, to LSI from the door position switch rear.
5	AN1	IN	Terminal not used.
6	AN0	IN	Terminal not used.
7	CNVSS	IN	Power source voltage: 0V (GND).
			VC voltage of power source circuit input. Connected GND.
8	RESET	IN	Auto clear terminal.
			Signal is input to reset the LSI to the initial state when power is applied. Temporarily set
			to “L” level the moment power is applied, at this time the LSI is reset. Thereafter set at
			“H” level.
9	P62	OUT	Terminal not used.
10	P61	IN/OUT	Terminal not used.
11	VSS	IN	Power source voltage: 0V (GND).
			VS voltage of power source circuit input. Connected GND.
12	XIN	IN	Internal clock oscillation frequency setting input.
			The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
			respect to Xout terminal.
3	XOUT	OUT	Internal clock oscillation frequency control output.
			Output to control oscillation input of Xin.
14	VCC	IN	Power source voltage: +5V.
			VC voltage of power source circuit input.
15	P60	IN	Plus signal coming from the Microwave drawer door open-close motor is input into P60
			as revolution number.
6	P37	IN	Input signal which communicates the drawer door open information to LSI from
			the door position switch front.
			Door opened; “L” level signal(0V).
			Door closed; “H” level signal(+5V).
17	P36	OUT	Signal to change the rotational direction is output to the Microwave drawer door
			open-close motor.
8	TXOUT	OUT	Signal to change the rotational speed is output to the Microwave drawer door open-close
			motor.
9	P34	OUT	Power source to drive the Microwave drawer door open-close motor is output.
20	RXD2	IN	Input terminal to check the data of display.
			Data signal from IC-2 is input to RXD2 to check the flow of the data.
21	TXD2	IN	Output terminal to send IC-2 the data.
			The data of display is output to IC-2.
22	SCLK2	OUT	Clock timing signaI output terminal.
			Clock timing signal is sent to IC-2.
23	P30	OUT	Signal to reset LSI.
			Signal is output to reset IC-2.
24 - 25	COM3 - COM2	OUT	Terminal not used.
26	COM1	OUT	Common data signal.
			Connected to LCD signal C5.

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